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Question: A 2004 Gallup survey interviewed a nationally representative random sample of 500 teenagers aged ...

A 2004 Gallup survey interviewed a nationally representative random sample of 500 teenagers aged 13 to 17; 51 acknowledged having smoked in the past week.

(a) What parameter are we interested in?

n, the number of teenagers in the sample

p, the proportion of the U.S. population who are aged 13 to 17

p, the proportion of teenagers aged 13 to 17 who acknowledge having smoked in the week before their interview

n, the number of people who smoke

(b) Give the numerical value of the point estimate for this parameter. (Use 3 decimal places)

(c) Calculate a 95% confidence interval for the parameter. ( , ) (Use 3 decimal places)

Answer 1